Question

8×-2=4×-7 (com conta)
4×-2×=1+7
16×-1=12×+3
4×+9=3×-2

Answer 1

8x-4x= -7+2
4x= -5
x= -5/4

2x= 8
x= 8/2
x= 4

16x-12x= 3+1
4x= 4
x= 4/4
x= 1

4x-3x= -2-9
x= -11

Answer 2

• 8x-4x = -7 + 2
4x = -5
x = -5/4

• 2x = 8
x = 8/2
x = 4

• 16x-12x = 3+1
4x = 4
x = 1

• 4x-3x = -2+9
x = 7